* {
 padding: 0;
 margin: 0;
}
html,
body {
 line-height: normal;
 -webkit-font-smoothing: antialiased; // 字体抗锯齿
}

input,
textarea {
 background: transparent;
 outline: none;
 border: none;
 resize: none;
}

.clearfix {
 &:before,
 &:after {
  display: table;
  content: "";
 }

 &:after {
  clear: both;
 }
}
ul,
li {
 list-style: none;
}
